Type-writing machine.



E. H. LORENZ. TYPE WRITING MACHINE. APPLICATION FILED APRJB, 1909.

1 082,5 36. Patented Dec.30,1913. 3 SHEETS-SHEET 1.

15 as! g 41 l 25 i I l i. r--- l l E. H. LORENZ; TYPE WRITING MAGHINB. APPLICATION FILED APB.16, 1909.

3 SHEETS-SHEET 2.

Patented Dec. 30, 1913.

a I N 0 d 2 k F ATTUHN E Y5.

B. H. LORENZ.

TYPE WRITING MAGHINE.

APPLICATION FILED APR. 16, 1909.

Patented Dec. 30, 1913.

3 B HEETS-SHEET 3.

. -STA PATENT QFFIGE atia a taaa1a ASSIGNBW muses-1 I N'EC'IICUI, ArCORPQRAlIION-OF;CONNECTICUT.

MENTS, TO THE NOISELESS) TYPEWRITER COMPANY, OF MIDDLETOWN, CONE .wmwmme MACHINE. '7

T6 allwhom it may concern.

citizen of the United States, residing at Hart'ft)rd,in the county of Hartford and State; at Connecticut, have invented certain '14 will enable -others;skilled in the; art to which it' appertalnstomake and usethe-same,

- This invention relates to 'typeivriting ma chines and oneof the objectsj thereof is to? rovide new and improved means for adjusting the platen with respect to'fthe printing planef Another object is to provide in amalchine. employing type bars which have limite'd movements in the direction 0f the pla'ten, means whereby the platen may be moved automatically i to a proper printing position to receive the pressure of the type when printing is to be 'efl'ected i upon an impression sheetor impression sheetsof vary f'ing thickness or thicknesse's.

Anotherobject :is' to provide means tor holding the platen in fixedposition during printing 7 r e}.

Otherobjects will be in part' obvious and inipartpointed out' hereinafter.j

The invention accordingly co'nsistsin the features of construction, combinations "of elements and arrangement of parts which will be-exemplified in the construction here inafterset forth, and' the scope of the aplicationgof which will be ollowing claims. y I

In vthe accompanying drawings,, wherein is illustrated twd of the various:'. possible indicated in the embodiments of my invention, Figure 1 is a plan view, partly brokenaway, ofmy improved adjusting mechanism; Fig. 2 is a front elevation thereof; Fig. 3 is a sec tional view taken -substantiallyon line 3- 3 ;of .Fig. 1-, looking in thedirectioh ofthe arrows; Fig; 4 is a similar View ta'kensubstantially'on line of Fig.1, looking in Q I l 7 i any'suitable shifting mechanism not herein 'sh0Wn.'--' 1 22- indicates an upstaii dingfportion of the" j frame ofthe machine, which?constitutes a 105 t'rame, said abutment having' a vertically the direct-ionof the arrows; Fig.6 is a=secin elevation and -the' automatic adj usting; mechanism for theplaten, the? section or the carriagmbing taken substantially on the same lineas that shown in Fig. 4 ;'-Fig.

'6 is, awiew in plan of a diflerentembodi suitable balancing arms 20'.

' .SpecifieationofLettersPatent. p3f t :1 30 1913 I ApplicationfiledApril16,1909. "seriaino.4ep,soo-

ment of platen-adjusting mechanism, 'ce'rkj tain of'the parts beingbroken away in'the interest of clea'rness'ofillustr'ation'fFig. 7 isa partial View of the mechanism 'shown'in Fig. 6, the part broken away,'beingtaken' substantially on" the ".l-ine 7 'Z of Fig.8, looking in the direction; of'the" arrows; Fig. '8" is asectionalwiew on the line 8- 8 of Fi, i:- 6,"

looking in the directionofthe' arrows 9 isfa sect-ion'alwiew showing thep'art's illus- 'tra-ted in Fig. 8, but in another position;

tion of the carriage centric adjustments.

Fig. lO-is" a sectional view of the rear porshpwingone of the ec- Similar-reference characters refer to simi- I Paris "s l ve l. view of the drawings.-

' Referring now to the 'dravzings, andfparn illustrated in; Figs. 1*to 5 inclusive, 1" denotesaportio'n of y p v '75 top plateo'r bed *2 WhlCl'l supports the sev-* ticularly to theembodime the 'framing of the Iiiachine whic'h earries t-he eraltypebars-one of which is shown at 4 The type ,bars slide across this}1-bd',;bein'g suit-ably guided by :a cap plate 4= and' pins 5-43, and are actuated by means; of -a link beinglconnectedyby means" of the rod 10, with the key" lever 11"pivot'ed upon the bar 7, cam 8 andlei' er 9,this'latter'mechanism 12- A spring 13urgesth'e keylefv'ejrand a'ssociated'parts to normal position Theactu-l ated. mechanismfor the type bars is} adapted to thrust the type' toward thei platen to a predetermined position where they-areposr tively arrested, said mechanism, broadly, 7

being similar to that disclosed "in patent to her 8. 1896. I

oppositely disposed grooves between which WV. P. Kidder," N0. :567 ,2111, patented Septem- ISIHtGIPOSt-Bda grooved rail- 19 supported in Th entire cari iage. may be'shifted vertically by means of the links'21c0nnecting the shift rail 19 with fixed backing or abutment for the plateh dis osed portion which receives 'ayerti'callydownwardly-bent tongue of the platen carriage which slides longitudinally 1n the block when the carriage is fed or letterspacing. y 5 Dove-tailed in the end portions 14 and lo of the platen carriage respectively, are roll slides 25 and 26, to the forward ends of which are attached the printing platen 27, which is provided with a substantially plane face for receiving the impact ofthe types and a curved rear face conforming to the platen roll 28, which is journaled in the slides 25 and 26. The platen rests aga nst the platen roll and is held thereby against recession during the printing operation; The carriage is also provided with paper rolls 29 supported with suitable arms and provided with suitable sprin s for pressing the rolls against-the paper t at is fed between them andthe platen roll. The slides 25 and 26, which carry the printing platenand platen roll, are PIOVIdGd with extensions at the rear, to which are secured pins 30 and 31, said pins engaging cam grooves 32 and 33 in arms 34 and 35, one of which is secured to each end of a shaft 36 extending longitudinally of the carriage and 'ournaled in the end pieces 14 and 15 thereof The shaft 36 carries a forked arm 37 engaging with a pin 38 in the bifurcated lever 39. This lever is pivoted at 40 in an upstanding bracket 41 and its forward end is provided with a roller42' which rests upon the platen roller 28, as is clearly shown in-Fig. 4 of the drawings. A retractile spring 43 draws the rear end of lever 39 downwardly and presses the roller-'42 upwardly against the platen roll. Having described this embodiment ofmy invention, the operation thereof, which to a large extent should be obvious, is substantially as follows: At this point it may be noted that normally the platen 27 lies substantially' in the normalprinting plane, that is, in a position wherethe type faces will just reach or barely touch the same when projectedto impression, so that when a single sheet is interposed between the platen and the type faces the proper pressure to produceprinting will be exerted thereupon. The operator, -in inserting several sheets of paper, passes the same under the platen roller '28 and overthe feed roller 29, the paper also passing between the feeler roller 42 and the platen roll. The passing of the paper between the platen roll 28 and the feeler rollert42 will cause the latter to be depressed, raising the rc-ar end of the lever 39, which will oscillate arm 37 and shaft 36, thereby, through cam grooves 32 and 33, which engage pins 30 and 31, drawing the slides .25 and 26 rearwardly and thereby carrying the platen roll and. printing platen backwardly away from the normal printing plane. The positions assumed by the several parts are shown in Fig. 5, where the platen is properly positioned or printing upon that number of sheets which will thereafter be fed over the platen.

Referring to the embodiment illustrated in Figs. 6 to 10 inclusive, the carriage comprises two side pieces 44 and 45 secured tov gether bymeans of the trough 46 and supporting the platen roll 47 and the printing platen 48. The carriage is pivoted and shdes upon the carriage rail 49, shown in Fig. 8, the rail being supported by means of arms 50 upon the balancing-shaft 5-1 journaled 1n the frame of the machine. The carriage block 52 is tongued in a groove in the fixed rear abutment 53 so as to be capable of moving vertically and endwise when the platen carriage is shifted. Secured to trough 46 is a plate 54 having a tongue 55 which is received in'a recess of the block 52. This en- 5 ables the carriage to move horizontally with respect to the block when letter-spacing movements thereof are forwarded.

The sides 44 and 45 attached to the carriage are capable of movement forward and back with relation to the plate 54. thereof, moving the printing platen 48 which is carried by the sides to or from the faces of the types. This movement of the sides 44 and 45 and the carriage frame with relation to the plate 54 is effected as follows: The plate'54 is provided with ears 56 which extend downwardly, and these ears are pivoted to eccentric rods 57 which engage eccentrics 58 upon the eccentric shaft 59, said shaft being journaled' in the end walls of the carriage. The shaft 59 is encircled by a pair of yokes 60, said yokes supporting the racks 61 having teeth meshing with pinion teeth 62, in the present instance, on the shaft 59 itself, this construction being clearly shown in Figs. 8 to 10. The racks 61 are pivoted to levers 2 63 connected respectively to yokes 64, which supportrat their forward ends paper feed rolls 65 that bear against the platen roll 47 being held against said roll by means of a flat spring 66 shown in Fig. 8. The yokes 64 are pivotally supported by a shaft or red 67 which extends longitudinally of the carriage. 'I

The operation of this last'des'cribed embodlment of my invention is as follows: The paper upon which printing is to be effected, indlcated at 68 is passed between the paper feed roll 65 and the platenroll 47, as shown in Flg. 9 of thedrawings. The paper will press the roll 65 downwardly a distance depending upon the thickness thereof, and thereby move the lever 63 upwardly together with the rack-61. This rotates shaft 59 to 2 gether with the eccentrics 58 and moves the larger, diameter of the eccentrics forwardly from the position shown in Fig. 8 to that shown in Figs; 9 or 10. The connecting rods 57 are secured to the longitudinal plate 54 which is held by means of the carriageblock 52 .to-the rear, abutment 53, causing. the en:

tirebody .of the carriage together with the 'platenrolland printing platen to be moved 'bac'kwardly toward the fixed abutment 53 and open up aspace, as shown in Fig.8, be;-

tween theiplaten and tthef-aces of the type.

The proportion and arrangement of theparts. are such that whatever thickness of paper isinserted between the platen roll 47 and thepaperroll 65, the position, of the platen will be movedrearwardly to such position as will-enable the proper printing pressure. to be applied to the paper. a i

.-It will, accordingly beseenthat I have provided mechanism of the above-character well adapted to attaimamong vothers, allthe ends and objects above pointed: out and which will operate automatically to adju'st the platen to-the proper position to receive the printin cpressure irrespective of the number of-s eets u n which printing is to be efiected, .Theiagiiisting operation- -of the platen being, entirely automatic, noicare or the sheets in the machine in'the usual man:-

'26 Attention .isrequired on thespart of the operator, it being merely necessary toinsert of t eproper printing, pressure to be applied The term 4 platen used :ir 1j"many of ithe following claims is-J-to be understood as including either the form of platen illustrated and vdescribed in thisapplication or the usual platenv roll used on-many styles of typewriters. P Having describedmy inventionywhat I claim as new anddesire to secure'byLetters Patent is: I f 1 1. "In a typewriting machine, the'combination with the type carriers, of a-;platen, and means forgautomatically' varying the: dis- 'tance of the platen-from the cdmmon plane assumed by the faces of the typeswhenthey areprojectecl toi-mpression; I I

2. In a ,typewriting. machine, the combina tion with the platen, of aplultality of type carriers, and; mean's ucontrolled-by "the nume ber of impression sheets positioned upon the platen for regulating the distance-of the latter from the common planeassumed by-the faces of the types when they are projectedto impression. 1 1 1 v 3. In a typewriting machine; the combina-'- tion with the platen, of apluralityof type carriers, a platen ,ro 1l disposed; behind v the platen, andmeans .e'ngagin the i impression sheets positioned .upon the p at-enroll forautomatically I adjusting the position of the platen with respect to the normal printing P ne . 4. Ina typewritingfmachine, the combination with the platen oi a pluralityof type carriers, a platen roll, and-means, the variation of which isdetermined by the thickness or thicknesses of; the impression sheet or sheetscarried by the platen roll, for regulating the; position 1. of the. pl ate'n with. re specttothenormalzprinting; planes f 5, In a typewriting machine-, the combination with thelplaten, of a plljlralityxof type bars each of whichqhas a redetermined throw in the direction oftne p aten to a nor- 7 mal printing-plane,- a' paper, roll 'carried by the platen carriage, and means engagingthe paper carriedby the paperrfollafor automatically varying the distance thereof from the normal printing plane, p 1 i a.

, 6. In a typewriting machine, the combination with the platen carrier oftype bars movable toa normal printing plane, a paper 'rollupon the platen; carrier, aplaten-- disposed in front of the paper -roll,-and means c'arriedbythe platen carrier adapted toengage the paper carried by the platen roll for; automatically moving the platen'to such position behind the normal printingplane as will enable the impression sheets to receive the P P egree of,- pressurefrom thetypes. a

7. In a typewriting machina the combina tionwiththe platen carrier, of a plurality of type bars movable to "a normal printing plane, aplaten-fixed upon the platen carrier,

" a paper roll located 'behindthe 'platenya finger mounted upon theplaten carrierwhlch engages the impression sheetspositioned upon the paper roll, and means actuated bvwsaid finger for moving the platen carrier and therebyvarying the position-of the platen with respect to the normal'print ingplane; v g 8. In a type'writing machine, thecombinw tionwith the carriage, of a platen carrier adj-nstably mounted, thereon, in "plurality of type bars'each of which-'lias'a limit-ed throw in f q i no the platen, a platenya platen rolljournaled upon'the platen carrierand-engaging the back face of the platen to form a backing therefor, "a feeler mounted upon the platen carriage and adapted to engage with the impression sheets carried by the platen roll, and means actuated by said feeler "to automatically inove thetplaten' carrier to a posit-iondependent upon the number of impression sheets carried by the paperroll."

9, In a typewriting machine, the 'combinatlon with the carriage-,a platencarrier ad ustabIy mounted thereon, a paper roll fixed upon the platen frame, a paper roll journaled thereon behind the platen and which furnishes a backing for the latter, means adapted to adjust the platen. carrier upon the carriage, whereby the platen may be moved toward or. from the normal print ingplane, and a feeler connected with said adjusting means and engaging the paper upon the paper roll.

i 11. In a typewriting machine, the combination with a plurality of type bars movable to a normal printing plane, a carriage, a

platen frame adjustablv mountedthereon, a shaft journaled upon the carriage, a pair of arms one of which is mounted upon each end ofsaid shaft, cams formed upon said arms, means upon the platen frame for engaging said cams, a feeler pivotally mounted upon the carria'ge and operatively connected with said shaft, and a platen roll mounted upon the platen frame, said feeler being adapted to engage with the paper carried by the platen roll and actuate said cams whereby the platen frame is moved rearwardly with respect to the normal printing plane.

12. In a typewriting machine, the combi-' nation with type bars each of which has a limited throw in the direction ofthe platen to a normal printing plane, a carriage, a platen roll journaled thereon, afeeler pivotally mounted upon the carriage and adapted to engage with the paper upon the platen roll, and means for automatically adjusting the platen roll toward or from the normal printing plane. Y I

13. In a typewrit-ing machine, the combination withtype bars each of which has a limited throw in the direction of the platen to a normal printing plane, a carriage, a platen roll journaled thereon, a feeler pivotally mounted upon the carriage and adaptedto engage with the paper upon the platen roll. and cam means interposed between said feeler and the platen carriage for automatically moving the latter with respect to the normal printing plane. i

14. In a typewriting machine, the combination withthe type bars having a limited path of travel to a normal printing plane, of a paper carrier adapted to carry a plurality of impression sheets, andmeans for auto matically positioning the' outermost sheet in the normal printing plane.

15. In a typewriting machine, the combination with the type carriers having a limited movement toward a normal printing plane, of a platen adapted to carry a'plurality of impression sheets, and means associated with oneof said parts adapted by the insertion of asheet of paper into the machine to position the outermost lmpres sion sheet inthje normal printing plane a 16, In a ty-pewriting machine, the combi-v nation with a type carrier having a limited path of travel,-,of a platen carriage having a platen adapted to carry impression sheets normally disposed at'one'end of the path of travel of said type carrier, and means associated with one of said parts for automatically var ing" the distance between the platen an the type carrier according to the number of impression sheets carried thereby.

17. In a typewriting machine, the combination with a type carrier having a limited path of travel to a normal printing plane, of a carriage, a platen carried thereby adapted to carry a plurality of impression sheets, and means associated with one of said parts for automatically positioning the outermost impression sheet n the normal printing plane. j

18. In a typewriting machine, the combination with a type carrier, of an adjustable platen, and means automaticallyactuated in accordance with the total thickness of the paper to adjust said platen with respect to said type carrier.

19. Ina typewriting machine, the combination with a pressure-operated type carrier having'a'limited path of travel, of an adjustable platen, and means automatically actuated in accordance with the total thickness of the paper to adjust'said platen with respect to said type carrier.

20. In a typewriting machine, thepombination with a type carrier having a limited stroke,- a platen, a relatively fixed abutment, and means adapted to vary the distance between the platen and the abutment to adjust said laten relatively to the normal printing p ane simultaneously with andby the insertion of a sheet of paper.

21. In a typewriting machine, the combination with a platen, of a relatively fixed abutment, and means for automatically vary ing the distance between said platen and said abutment as a sheet of paper is inserted in the machine.

22. In a typewriting machine, the combination with a pressure-operated, type carrier, of a platen, a relatively fixed abutment, and means actuated by the paper inserted in the machine for varying the dis:-

tance between said platen and said abutment. I

23. In a t-ypwriting machine, the combination with a pressure-operated type carrier having a limited path of travel to a normal printing plane, a paper carrier, aplaten thereon, an abutment behind sakd platen, and means actuated by the inser ion of a sheet of paper for varying the distance between sald platen and said abutment-t0 adjust the same relatively to the normal printm plane.

In av typewriting machine, the combiQ nation with a silently operated type carrier having a limited path of travel, offa paper carrier, a platen carried, thereby, an abutment behind said platen, and means'associated with said paper carrier adaptedito vary the distance between the platen and the abutment. 1

25. In a typewriting machine, the combination with a pressure-operated type car--' rier having a limited path of travel, ofa" carriage, a lat'en carried thereby, atfixd abutment be ind said carriage, and means on said carriage adapted-to vary the distance between said plat'en and said abutment riage, and means automatically actuated in Jaccordance with the thickness of'the paper normal prlntin to adjust said type carrier. 27. In a typewriting machine, the comb1- a fixed abutment behind said carriage, an means automatically actuated in accordance with thetotal thickness of the paper to vary abutment.

nation with a rier having a limited path of travel to a platen carried t ereby, a fixed abutment bercarriage automatically actuated in accordance with thetotal th ckness of the paper to.

printing plane.

in the presence of two witnesses.

' EDWARD H. LORENZ.

Witnesses: CHARLES H. S'roRRs, Q

Nmm PHOENIX.

\ fioplel of this patent inaybe obtained for five cents each, byaddreulng the Commissioner of intents,

\ Washington, D. 0.

plane, of a carriage, a-

"adjust said platen relative to the normal In testimony whereof I afiix my signature,

platen with respect to said nation with a pressure-operated type carrier, of a carriage, a platen carried thereby? the' distance between the platen and said 28. In a typewriting machine, the-combi- ,3

pressure-operated type car-' hind said carriage, and means carried by the 5 

